6
Repairs Field Assembly Tool List:
Field service and inspecon on Jensen Series 400 Mixers requires only basic hand tools.
The following list will allow removal of all major components.
All maintenance repairs should be performed with the mixer motor locked out and tank contents
locked in. (See page 8 for lockout instrucons.)
Main bearing – Perform LOCKOUT PROCEDURE and remove seal. Remove all belt guards. Remove 4
hex socket head screws from the bearing retainer ring. The driven pulley along with bearing and
pulley hub can be removed by pulling straight back. With the pulley assembly o, press out bearing
from back side of hub and replace. Reverse above procedure for re-assembly.
Mechanical Seal replacement see pages 6-10.
Belt replacement—Remove all belt guards. Lower the motor base plate. Remove belts and replace.
Reghten using belt alignment guide. (Page 4)
When the mixer is removed for repairs:
Sha Bushing Inspecon - (Item # 37 pre Sentry or #29 Sentry)
Once the body has been removed, the inner sleeve which holds the sha bushing can be removed. A groove is provided on the
exposed end of the inner sleeve; a pair of screwdrivers may be used here to start the sleeve out. The sha bearing is located
inside the inner sleeve at the propeller end. If it is badly worn or scarred, it should be replaced.
The bushing material is solid tungsten carbide for greatest resistance to wear in the most abrasive environments. If it is worn it
will be necessary to replace the enre INNER TUBE ASSEMBLY.
To reinstall the inner sleeve, posion the lugs away from prop, vercally, then push the sleeve in unl it stops. Replace the O-
ring on the outside of the sleeve.
We recommend that when mixing light products such as gasoline, or materials containing heavy abrasive characteriscs, the
inner sleeve should be removed and the TC bushing inspected.
Sha Wear Sleeve - (Item # 38 pre Sentry or #31)
All Jensen Series 400 mixers are equipped with a tungsten carbide reversible sha wear sleeve. When the tank is out of service
for periodic maintenance, the wear sleeve should be inspected. If it is badly worn or scored it should be reversed. To change
the sleeve, remove the propeller and sha lock bushing, reverse the wear sleeve and assemble.
JENSEN OFFERS A FULL FACTORY RECONDITIONING PROGRAM, CONTACT YOUR LOCAL REP FOR DETAILS.
420 450 480
End Wrenches (2) Ea. 1/2, 9/16 ,3/4 5/16, 1/2, 9/16 ,3/4,
15/16, 1-7/8
5/16, 1/2, 9/16 ,3/4,
15/16, 1-7/8
Hex Wrench (1) Ea. 3/16, 7/32, 1/2 3/16, 7/32, 1/2 3/16, 7/32, 1/2
Adjustable Wrench (1) 2” Jaw Open 2” Jaw Open 2” Jaw Open
Large Flathead Screw-
driver 2 Required 2 Required 2 Required
Tenney Company
www.tenneyco.com
For Jensen Mixer Parts - Call 281-350-1200
